Found:

Aspiration

PHONOLOGY: the delay of vibration of the vocal cords after the production of a voiceless consonant. There is a short period of air stream heard as a 'h'-like puff, designated with the phonetic symbol [h], as in English pin: [phin]. In some languages (cf. English) aspiration is predictable and position-bound.

LIT.	Chomsky, N. and M. Halle (1968) Kenstowicz, M. and C. Kisseberth (1979)